The tire of your bicycle needs air so you attach a bicycle pump to it and begin to push down on the pump’s handle. if you exert a downward force of 25.0 n on the handle and the handle moves downward 0.500 m, how much work do you do?

12.5 J

Explanation:

Force, F = 25 N

Distance, d = 0.5 m

The direction of force and the displacement is same.

Work is defined as the product of force in the direction of displacement and the displacement.

Work = Force x displacement x CosФ

Where, Ф be the angle between force and the displacement

Here, Ф = 0°

So, W = 25 x 0.5 x Cos0°

W = 12.5 J

there are no contact forces mentioned on the list of choices that you've provided.

inverse v=i*r

nice nice